Dust scraper for elevating graders



l llllllll l lllll J m I F. H. LUNDEAN DUST SCRAPER FOR ELEVATING GRADERS Filed Dec. 9, 1927 Z'fiLun (lean;

Aug. 6, 1929.

Inventor Attorng Patented Aug. 6, 1929.

UNITED STATES .IRED .H. JIUNDEAN, .OF .BIJ'CKLDT, MISSOURI.

ZD'UST ECRKBER 'IOR TELEVATING GRAEI JERS.

Application filed Member 8, 1927. *Serifll Ho. 2382M.

The present invention :relates tto ahfilt ailevators, .and more particularly "to uneans for removing accumulationofdirt or other material from the inner face 0f the belt adjur cent "to its lower end where such :material interfers with the operation :of thezconveyor by engagement between the beltandlthe operating roller or pulley.

An important object of the invention resides in the provision of such a device which maybe attac'hcd to beltcon-veyors of theusual type, and havingmeans for m'anually 'oper-ating the device when desired.

A still further important object resides in the provision of a device-of this nature which is simple in its construction, inexpensive to manufacture, and thoroughly efficient and reliable in operation.

A particular object of the invention is to provide such a cleanable belt conveyor of road grading machines.

Other objects and advantages will be apparent from the following description and it will be understood that changes in the specific structure shown and described may be made within the scope of the claims without departing from the spirit of the invention.

In the drawings forming a portion of this specification, and in which like numerals of reference indicate similar parts of the several views.

Figure 1 is a fragmentary longitudinal section through a road grader with an elevator mounted therein and showing parts of my device,

Figure 2 is a fragmentary longitudinal section through the lower end of the elevator showing associated parts of my device,

Figure 3 is a sectional view taken substantially on the line 33 of Figure 2, and

Figure 4 is a perspective View of a guide bracket.

Referring to the drawing in detail, it will be seen that the numeral 5 denotes a portion of the frame of a road grader in which is supported an endless elevating mechanism 6 which comprises among other usual elements, side members a, a lower roller 6, and an endless belt 0. The sides a are provided with openings (Z. I place a pan 8 across the belt 0 between the runs thereof adjacent the bottom roller 1), this pan extending through the openings at. The pan 8 is formed with side flanges 9 extending in a plan transverse to the movement of the belt rising therefrom at right angles .and Bterminuting at their upper edges inwardly directed extensions 10. The penis open-at' its ends to permit e'j @GtlDI-Lofthe soil and :is substantially rectangular in 'configuration. Ascrapper l l is movable-along the upper surface of the pan Sand its ends areguided' by-the flanges 9 m their extensions 10. rod 12 is pivota'lly-engaged with the scraperas-at -13 andis'pi-votally engaged a's at 14 with a lever 15. "The 'lever 15 extends through #an opening 16 in a board 17 supported on the frame ,5. "The lever, intermediate its ends, is formed with a stop 18 which is to'ola'rgeito {pass through the opening 10 and thereforeawill-xest on=theboard 17 as is clearly shown in Figure 1. It will be seen, however, that the lever 15 may move upwardly if the endless elevator 6 is moved up wardly as happens in certain classes of road graders. The numeral 19 denotes an axle at the rear of the road grader and I mount thereon a U-shaped guide bracket G one leg of which is longer than the other terminating in a plate 20 secured to the top of the axle 19 so that the guide bracket G extends rearwardly with its two legs in the same horizontal plane. The other leg is provided with a laterally outwardly extending projection 21. The lever 15 extends between the le s of the bracket G.

From the above detailed description it will be seen that every once in a while the operator of the machine may actuate the lever 15 so as to move the scraper 11 back and forth along the pan 8 so as to eject any dirt or the like which may have collected thereon. This will prevent the conveyor from becoming out of order as happens quite frequently under the usual present practice because this shows dirt and the like that is on the inside of the belt and between the belt and the rollers thereby causing considerable resistance in the case of big clogs of dirt or stones makes the elevator inoperative.

It will also be seen that the structure is very easy to install in an inexpensive yet strong and durable manner.

The present embodiment of the invention has been disclosed in detail merely by way of example since in actual practice it attains the features of advantage enumerated as desirable in the statement of the invention and the above description. It will be apparent that changes in the details of construction, and in the combination and arrangement of parts may be resorted to without departing from the spirit or scope of the invention as hereinafter claimed or sacrificing any of 1ts advantages.

Having thus described my invention, what I claim as new is:

1. A cleaner for belt conveyors comprising a pan of substantially rectangular configura tion adapted to be mounted between the runs of the belt and having a pair of opposed side flanges rising therefrom at right angles and terminating in inwardly directed extensions, a scraper movable along said pan having its ends guided by the flanges and their extensions, and means for moving the scraper,

2. A cleaner for belt conveyors comprising a pan of substantially rectangular configuration adapted to be mounted between the runs of the belt and having a pair of opposed side flanges rising therefrom at right angles and terminating in inwardly directed extensions, a scraper movable along said pan having its ends guided by the flanges and their extensions, a rod pivotally engaged with the scraper, a lever pivotally engaged with the rod, a

board having an opening through which the lever projects, and a stop on the lever intermediate its ends larger than the opening to rest on top of the board.

3. A cleaner for belt conveyors comprising a pan of substantially rectangular configuration adapted to be mounted between the runs of the belt and having a pair of opposed side flanges rising therefrom at right angles and terminating in inwardly directed extensions, a scraper movable along said pan having its ends guided by the flanges and their extensions, a rod pivotally engaged with the scraper, a lever pivotally engaged with the rod, a board having an opening through which the lever projects, a stop on the lever intermediate its ends larger than the opening to rest on top of the board, an elongated guide bracket of U-shaped formation having one blade longer than the other, the terminal of the longer leg being adapted to be fixed to the axle of a machine, and the lever projecting between the legs of the bracket.

in testimony whereof I aflix my signature,

FRED H. LUNDE AN. 

